Principles of electricity and magnetism / by Emerson M. Pugh and Emerson W. Pugh. Pugh, Emerson M. Pugh, Emerson W., joint author. Electricity. Magnetism. QC521 .P8 537.2 PUP Includes Index. Reading, Mass. : Addison-Wesley Pub. Co. c1960. c1960. 1960 Text xi, 430 p. : eng Addison-Wesley series in physics